/**
 * 阿克曼函数 
 * https://en.wikipedia.org/wiki/Ackermann_function
 * @param {any} m 
 * @param {any} n 
 * @returns 
 */
function f(m,n){
    if(m==0)return n+1;
    if(n==0)return f(m-1,1);
    return f(m-1,f(m,n-1));

}

function parsertInt16(num){
    return '0X'+parseInt(num).toString(16).toUpperCase()
}
